Carolina is a municipality located on the northeast coast of Puerto Rico. It lies immediately east of the capital San Juan and Trujillo Alto; north of Gurabo and Juncos; and west of Canóvanas and Loíza. Carolina is spread over 12 wards plus Villa Carolina (the downtown area and administrative center). It is part of the San Juan-Caguas-Guaynabo Metropolitan Statistical Area, and home to Puerto Rico's main airport, the Luis Muñoz Marín International Airport.